#include<iostream>
using namespace std;
int main(){
    double length ,width,area;
    cout<<"请输入矩形的长和宽："<<endl;
    cin>>length;
    cin>>width;
    area=length*width;
    cout<<"长为"<<length<<"宽为"<<width<<"的矩形面积为:"<<area<<endl;
    return 0;
}